/// <summary>
/// Encrypt String Method
/// Example :
/// var strencrypt = EncryptionHelper.AES_EncryptText("PrivateKey", "123456789")
/// Result :
/// cGBffELTG_R97rS_BYhNww
/// </summary>
/// <param name="strEncode"></param>
/// <param name="txtValue"></param>
/// <returns></returns>
public static string AES_EncryptText(string strEncode, string txtValue)
{
try
{
// Get the bytes of the string
byte[] bytesToBeEncrypted = Encoding.UTF8.GetBytes(txtValue);
byte[] EncodeBytes = Encoding.UTF8.GetBytes(strEncode);
// Hash the password with SHA256
EncodeBytes = SHA256.Create().ComputeHash(EncodeBytes);
byte[] bytesEncrypted = AES_Encrypt(bytesToBeEncrypted, EncodeBytes);
//string result = Convert.ToBase64String(bytesEncrypted);
// Base64UrL Encrypt for web
string result = Base64UrlHelper.Encode(bytesEncrypted);
return(result);
}
catch (Exception ex) {
return("Error :" + ex.Message);
}
}
/// <summary>
/// Decrypt String Method
/// Example :
/// var strdecrypt = EncryptionHelper.AES_DecryptText("PrivateKey", "cGBffELTG_R97rS_BYhNww")
/// Result :
/// 123456789
/// </summary>
/// <param name="strEncode"></param>
/// <param name="txtValue"></param>
/// <returns></returns>
public static string AES_DecryptText(string strEncode, string txtValue)
{
try
{
// Get the bytes of the string
// Base64UrL Decrypt for web
byte[] bytesToBeDecrypted = Base64UrlHelper.Decode(txtValue);
//byte[] bytesToBeDecrypted = Convert.FromBase64String(txtValue);
byte[] EncodeBytes = Encoding.UTF8.GetBytes(strEncode);
EncodeBytes = SHA256.Create().ComputeHash(EncodeBytes);
byte[] bytesDecrypted = AES_Decrypt(bytesToBeDecrypted, EncodeBytes);
string result = Encoding.UTF8.GetString(bytesDecrypted);
return(result);
}
catch (Exception ex) {
return("Error :" + ex.Message);
}
}